Solutions for Primary & Secondary Laboratories

Physical Features
Type A cells were designed by Dr. H. F. Stimson at
NBS. A tubular glass extension at the top of the cell
serves as a convenient handle for lifting and carrying
the cell, as a hook for supporting it in an ice bath,
and as an indicator of partial pressure of air in the
cell.
95
95
Type B cells were designed at NRC of Canada.
The thermometer well extends 100mm above the
top of the cell. Heat transfer to the ice mantle may
be essentially eliminated by keeping these cells
packed in ice to the top of the well extension, or by
immersing them sufficiently in a Water Triple Point
Maintenance Bath.
E
E
14
14
70
70
E
E
C
CD
D
A
A
C
CD
D
A
A
TYPE
B
A
B
TYPE
B
B
B
Nominal Dimensions in mm
Model
A11-50-270
A13-50-270
B8-30-130
B12-40-210
B12-46-210
B11-50-270
B11-65-270
B13-65-270
B16-65-270
A
11
13
8
12
12
11
11
13
16
B
50
50
30
40
46
50
65
65
65
C
350
350
160
290
290
350
350
350
350
D
270
270
130
210
210
270
270
270
270
E
100
100
0
75
75
100
100
100
100
Comments
Highly recommended (1) (2)
Large re-entrant tube (1)
Slim Cell - Fits Isotech Dry Blocks
Replacement for NPL, UK Type 32 Cells
Recommended for Isotech Oceanus
Highly recommended (1) (2)
NRCC’s favourite Cell (1) (2)
Large re-entrant tube (1)
Larger re-entrant tube (1)
(1) Isotopic Analysis
is available.
(2) Available in
Quartz Glass.
8 | SOLUTIONS FOR PRIMARY & SECONDARY LABORATORIES